docs: updated changelog for v0.1.1

Author: luisaveiro

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [v0.1.1] - 2023-10-31
+### Fixed
+- Remove invalid type declaration in package.json.
+
 ## [v0.1.0] - 2023-10-31
 ### Added
 - `HEAD`, `GET`, `POST`, `PUT`, `PATCH`, `DELETE` request helper methods.